app.py

import subprocess

res = subprocess.run(
    ["npm", "install", "express", "socket.io", "axios"],
    capture_output=True,
    text=True
)


print("Output:")
print(res.stdout)

print("Errors (if any):")
print(res.stderr)

result = subprocess.run(
    ["node", "index.js"],
    capture_output=True,
    text=True
)

print("Output:")
print(result.stdout)

print("Errors (if any):")
print(result.stderr)